Nero is killing me

I'm not sure what's going on with my DVD Burner. I have a Sony DRU-810A with updated firmware and burning DVD with Nero worked great up to recently. I'm still able to burn CD, but not DVDs. I've ran a bunch of test through the applications from Sony and Nero. Everything gets a pass result, but when It comes to DVDs, I get a Burn Failure. If anyone out ther can help that would be great. I've posted the log file below.